. >> plus bay area law enforcement take a closer look at their communication readiness in the event of an act of terror. go to ktvu.com for the very latest video and images that we're getting in from boston. >> developing news now, some residents in the south bay are being urged to conserve energy after police say someone sabotaged a phone distribution center. and john fowler is live in santa clara county, john fowler has the story now. >> reporter: police say they are looking for someone with the technology knowledge. 1:26a.m. someone cut fiberoptic cables. first knocking out several 911 dispatch systems including gilroy's emergency police line which is still now. a moment later another cable cut sent phone and data systems down. >> they knew where to go for the fiberoptic, they knew where to cut. they also were able to take out very critical parts of the pg & e substation. >> reporter: the attacker used a high powered rifle, 30 to 40 shots. severely damaging five transmission banks at the sub station. pg & e said no one lost power. but they're asking the south bay to conserve power a